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While checking divisors we will have to be careful if there are two equal divisors as in case of 10, In such case we will take only one of them in calculation of sum.
Subtract the number n from the sum of all divisors to get the sum of proper divisors. If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.
See your article appearing on the GeeksforGeeks main page and help other Geeks. Skip to content. Change Language. Related Articles. Save Article. Improve Article. Like Article. An Optimized Solution to check Abundant Number. Function to calculate sum of divisors. Note that this loop runs till square root. Are there infinitely many odd [primitive] abundant numbers? Odd nonprimitive abundant numbers. Add to OEIS? The first odd abundant number not divisible by 3 is.
The first odd abundant number not divisible by 5 is. The first odd abundant number not divisible by 7 is. The first 3 -rough i. The first 5 -rough i. Exponentiated linear omega level Exponentiated polynomial omega level Double exponentiated polynomial omega level Triple exponentiated polynomial omega level Iterated Cantor normal form level Epsilon level Binary phi level Bachmann's collapsing level Higher computable level Uncomputable numbers.
Top contents. Recent blog posts Social activity Forum. Register Don't have an account? Odd-abundant number. View source. History Talk Notable examples These are special odd-abundant numbers, such as: is the smallest odd-abundant number.
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